For Americans to get the most out of their vehicles and reduce the amount of gasoline they use, we must push and test every aspect of the modern vehicle. According to a study by the United States Department of Energy, approximately 1.2 billion gallons of fuel are consumed by American motorists each year (Siggerud, 2007). This represents more than three billion dollars wasted every year. An experiment by metrompg.com found that inflating a vehicle's tires to 7 psi could increase their rolling distance by 12.5%. They also claim from another source that fuel efficiency is reduced by one percent for every three psi a tire is underinflated. This equates to about a four percent increase in gas mileage when tire inflation increases. Another poster on a forum named Lee posted some impressive results from his daughter's science experiment at school. He noted that they saw an increase of over five mpg when they inflated the tires an additional twenty psi from twenty-five psi. In order to push our vehicles, we will experiment with inflating a vehicle's tires to determine the rate at which vehicle efficiency improves as tire pressure increases.DesignThe experiment will use many technologies different digital and analog methods in an attempt to obtain the most accurate results. To start, the car's tires will be deflated to twenty PSI. They will then be driven ten miles from a gas station to the same gas station. The mileage will be counted by the TomTom application on an iPad. The same route will be taken with the same driving characteristics. Miles per gallon will be calculated using fill receipts and calculated mileage from the TomTo...... middle of paper ......art.jhtml?query=%3Cand%3E%28%3Cnear %3E% 28rolling%2Cresistance%2Ctires%29+%3Cin%3E+ALL%2C%3Cyesno%3E%28%3Cand%3E%28y+%3Cin%3E+fti%29%29%29&prod=ASTFT&fulltext=notchecked&eid=4893f508b42e1230197e040e9c2 964 1e7c6ce2197ce06427L. (November 23, 2006). Tire pressure science fair project. Insight Central: Honda Insight Forum. Retrieved December 7, 2011, from http://www.insightcentral.net/forums/mpg-issues/11950-tire-pressure-science-fair-project.html Siggerud, KA (February 9, 2007). Under-inflated tires in the United States (United States of America, Department of Energy, Government Accountability Office). Retrieved December 5, 2011, from http://www.gao.gov/new.items/d07246r.pdfSnapshot: Effect of tire pressure on rolling resistance [web journal article]. (January 20, 2009). Retrieved December 5, 2011 from http://www.metrompg.com/posts/tire-pression-rolling-resistance.htm